Agriculture accounted for about 30% of GDP in 2012/13. Labour productivity in agriculture is less than one third of the level in the rest of the economy, probably due to the high labour/low capital structure of the sector with small farms and few machines. Main crops include rice, maize, pulses and beans, sugarcane, and cotton. Myanmar is a net food exporter. Myanmar's simple applied MFN tariffs on agricultural products (HS01-24) and industrial products (HS25-97) were 9.0% and 4.8%, respectively, in 2013.